RE: Thank you!

Posted by dconsmack (A) on June 18, 2012 at 19:07:20

In Reply to: RE: Thank you! posted by Mr Blue Sky on June 18, 2012 at 17:26:41:

On my preamp, I have 5 choices for capacitance and 5 choices for impedance via knobs on the front pannel. I have never explored using clip leads with caps so unfortunately I can't offer any help here.
Since changing the impedance from 47k-ohm is probably not practical, I recommend getting the phono cable capacitance a low as possible so the peak treble resonance will be as high as possible (although it'll still likely below 20kHz). The lowest you could probably get a 1-meter cable would be about 100-110pF. Then you have to know the capacitance of the phono preamp's RCA inputs. Standard is anywhere from 100pF to 220pF. Again, the lower the value, the higher that treble peak will be. A phono preamp with an input capacitance between 20pF and 50pF will only help you. I think the Manley Chinook actually has a setting for 0pF, but it's too bad it's stuck at 47k-ohm impedance. If you ever have a phono preamp that can have adjustable impedance is when you'd be able to take advantage of adding capacitance instead of subtracting.
Even with all this tech talk, testing by ear may still be more important. A great test is to use the Digital Compact Classics (DCC) gold disc of Van Halen's self titled CD. The currently issued LP by Rhino/Warner Bros. is the exact same mastering (done by Steve Hoffman). For loading, listen to the cymbals. It's likely that without proper loading, the lp will sound bright and have more "air". That's the resonance peak. With the loading values I listed for the other 3 carts, they sounded nearly identical to the CD. The Shure V15VxMR was actually indistinguishable from the CD and is coincidentally Steve Hoffman's reference cartridge in the mastering room. All the comparisons were made from needle drops and their perceived output volume was matched. This is my reference recording for making sure my MM carts are loaded properly.

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Follow Ups Full Thread

Topic - Question about capacitance loading...eq-ing the sound of your cartridge? How does this work? - Mr Blue Sky 15:01:59 06/18/12 (20)

I suspect adding capacitance won't help - rebop 03:56:07 06/21/12 (2)

RE: I suspect adding capacitance won't help - Mr Blue Sky 16:40:12 06/21/12 (1)

RE: I suspect adding capacitance won't help - rebop 07:01:15 06/22/12 (0)

RE: Question about capacitance loading...eq-ing the sound of your cartridge? How does this work? - neobop 17:59:42 06/20/12 (0)

RE: Question about capacitance loading...eq-ing the sound of your cartridge? How does this work? - Bromo33333 13:25:53 06/20/12 (0)

RE: Question about capacitance loading...eq-ing the sound of your cartridge? How does this work? - dconsmack 16:24:33 06/18/12 (6)

Thank you! - Mr Blue Sky 17:07:05 06/18/12 (5)

RE: Thank you! - dconsmack 17:12:02 06/18/12 (4)

RE: Thank you! - Mr Blue Sky 17:26:41 06/18/12 (3)

RE: Thank you! - John Elison 01:20:04 06/20/12 (0)

RE: Thank you! - dconsmack 06/18/1219:07:20 06/18/12 (1)

just my experience with the ortofon OM series - Penguin 19:52:24 06/18/12 (0)

Don't forget the capacitace of the ICs between turntable and phono preamp. /nt\ - Opus 104 16:05:55 06/18/12 (1)

Good point. - Mr Blue Sky 17:01:36 06/18/12 (0)

You seem to have all the answers - Mystman 15:16:44 06/18/12 (5)

"Mystman" troll = hifitommy? - Mr Blue Sky 14:15:10 07/1/12 (1)

RE: "Mystman" troll = hifitommy?---NOPE - hifitommy 12:05:02 05/5/16 (0)

RE: You seem to have all the answers - Mr Blue Sky 15:51:29 06/18/12 (2)

He didn't register, ignore him - richardl 13:23:47 06/20/12 (1)

Thx for the tip! - Mr Blue Sky 17:40:06 06/20/12 (0)

Follow Ups

RE: Thank you! - dconsmack 06/18/1219:07:20 06/18/12 (1)

just my experience with the ortofon OM series - Penguin 19:52:24 06/18/12 (0)

RE: Thank you!

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